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May 2004

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Subject:
From:
Jeffrey Bush <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Mon, 17 May 2004 16:05:25 -0400
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Yes.  Chemical soldermask strippers are available, but do not work well
selectively as the material used to protect the areas to be maintained
will be attacked by the stripper.

A more accurate and efficient method is using laser.  If you an generate
a file that indicates the areas to be removed, the laser process will
give the best results, certainly on land areas.  This process will also
not affect the areas that need to stay intact.

If you need and specifics please let me know.

Jeffrey Bush
Director, Quality Assurance and Technical Support

                          76 Technology Drive - POB 1890
                             Brattleboro, Vermont 05302-1890
                                Tel. 802.257.4571.21 Fax. 802.257.0011
                                    [log in to unmask]
                              http://www.vtcircuits.com	



-----Original Message-----
From: bob wettermann [mailto:[log in to unmask]] 
Sent: Monday, May 17, 2004 2:32 PM
To: [log in to unmask]
Subject: [TN] Selective Solder Mask Removal via Chemcial Means


Does anyone have experience in using chemicals to selectively remove
solder mask from a PCB?

Thanks

Bob Wettermann
BEST Inc


Bob Wettermann

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